33 lines
1.1 KiB
TypeScript
33 lines
1.1 KiB
TypeScript
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import { eq } from 'drizzle-orm';
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import { db } from '@/lib/db';
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import { ports } from '@/lib/db/schema/ports';
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import { convert } from '@/lib/services/currency';
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/**
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* Port's default currency for money normalisation. Falls back to USD
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* when the column is null (legacy ports). Shared across the report
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* services so every money figure lands in one reporting currency.
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*/
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export async function resolvePortCurrency(portId: string): Promise<string> {
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const [row] = await db
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.select({ defaultCurrency: ports.defaultCurrency })
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.from(ports)
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.where(eq(ports.id, portId));
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return row?.defaultCurrency ?? 'USD';
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}
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/**
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* Convert `amount` from `from` → `to`. Returns the amount unchanged when
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* the currencies match or a rate is unavailable (so a missing FX rate
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* degrades to "report in source units" rather than dropping the figure).
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*/
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export async function normalizeAmount(amount: number, from: string, to: string): Promise<number> {
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if (!amount) return amount;
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const f = from.toUpperCase();
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const t = to.toUpperCase();
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if (f === t) return amount;
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const converted = await convert(amount, f, t);
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return converted?.result ?? amount;
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}
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